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precession video screenshot

Nutation and Precession

polar motion overhead

Polar Motion - Overhead View, Space Reference Frame

earth overhead screenshot

Polar Motion - Overhead View, Earth Reference Frame

polar motion screenshot

Polar Motion - Side View, Space Reference Frame

polar motion video screenshot

Polar Motion - Three Views

ut1 video screenshot

UT1

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Responsible NASA Official: Karen Mohr
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Curator: Rashida Holland

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Last Updated: 09/30/2026